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  • Title: Modifications in gastroduodenal motility induced by the extramucosal section of circular duodenal musculature in dogs.
    Author: Bortolotti M, Pandolfo N, Nebiacolombo C, Labò G, Mattioli F.
    Journal: Gastroenterology; 1981 Nov; 81(5):910-4. PubMed ID: 7286569.
    Abstract:
    The effect induced on the gastroduodenal motility by the extramucosal section of the circular layer of the first two parts of the duodenum, excluding the pylorus, was studied in a series of 5 dogs. The myoelectric and manometric activities of the antrum, pylorus, and duodenum were recorded by using special devices surgically implanted in the gut wall. The recordings were made 3 mo after operation, both during basal conditions and after stimulation with neostigmine. The results were statistically compared with those obtained in a control group of 4 dogs in which the electromanometric devices had been implanted 3 mo before. The gastric emptying time of a food-barium meal was determined radiologically before the operations, and 3 and 9 mo after. The results demonstrate that extramucosal duodenal myotomy: (a) significantly decreases the basal and stimulated motor activity of the duodenum, without noteworthy alterations of the gastroduodenal myoelectrical activity and coordination of motor waves; and (b) significantly shortens the gastric emptying time.
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